Pipe joint



Jan. 19 1926 1,570,223`

G; C. BARTRAM PIPE JOINT Filed sept. 20, 1922 'lm/ENTOR. GEonGE C. BRTRHM BY v " 'ATTORNEYS Patented-Jen. 19,1926. .d l 1,510,223@ I UNITED STATES-PATENTcomes."

g c GEORGE COBBIE BABTRAI, Ol' IBEEPOBT, NEW YORK, ASSIGNOB TO 'GIORGI 0.

BABTBAI, INC., O F BUFFALO, NEW YORK, .L COBYOBATION- OF- 'YORK'.

PIPE JODIT. `Application led September 20, 1928. Serial 10.589351.

To all 'whom it may concern: 4 the exposed portion thereof projec "across Il Be it known that I, vGnoizsn vComun BAnthe space 13 between the opposed faces 14 TBAM, acitizen of the United States of-Amerand 15 of the adjacent pipe sections inthe ica, residing at Freeport, in the count ofy .finished joint. The exposed marginalv area Vassau, Long Island, and State of ew of the sealing ring 11- is preferably provided York, have invented certain new and useful with twocrimps 16 and 17 faced in the op- 00- Im roveinents in Pi erJoints, of which the posite directions. Eo owing is a speci cation. To receive the sealing ringI embed in the M invention relates to pipe joints, and cooperating bell pifpe section a pair of part1cu1arly=to joints betweensections of rings 18 and 19, o different.v diameter, ar.-

concrete pipes. he objectof my invention ranged concentrically and thus aording an 05 is to provide the joint with sealing means annular pocket 20 located to receive the which are effective for high pressure' lines, sealing ring when the 4joint'is made. The and of such character that the sealis mainmargins of the rings 18 and 19 adjacent the ltained regardless of expansion and contracjoint face may be offset respectively outtion of the pipe sections. wardly and yinwardly at21 iand 22 to pro- 70 In the accom anying drawings 1 vide a flared guideway leading to the pocket Fig. 1 is a roken longitudinal section 20. and serving to assist in the guidance of through a ipe joint in which my invention the sealing ring 11 into the pocket. l 1 20 is embodie in one form; While the o posed crimpsv 16 vand 17 are Fig. 2 is an enlarged and somewhat exagpreferably suc as to impart an eective 7 gerated transverse section through the joint thickness to the marginal sealing ring subseal; stantiall correspon g `to the space b'e- Fig. 3 is a similar view of thesealing ring tween t e innerA and outer walls of the and gasket in condition for insertion; pocket 20, vand thus form a seal there- Fig. 4 is an enlarged transverse section with, I prefer to associate with the crimped 90 through the gasket ring alone; and area ofthe sealing ring a gasket orfpackin Fig. 5 -is a view corresponding to Fig. 1, of a suitable character to seal the joint stig 'but showing a modification. more effectively. A suitable gasket for this 3o The invention may be embodied in various purpose is afforded by lead packing. This types of pipe, and at various points in the may be of ang( suitable character, such for 85 joint area. It is illustrated in the accomexample as in ependent lead rings arranged panying drawings in pipev sections of more in theannular channels 23 and 24 aifor ed f or less conventional type united by a bell and by the respective crimps in the mar 'n of $5 spigot joint. Thus, the section 5 is under'- the .seahng ring. A still more e ective cut at its end to form a bell iian `e 6, while packing is secured, however, if an arrange- 90. the adjacent section 7 is perip erally re ment of the t pe illustrated is employed. cessed to form a spigot flange .8 ada ted to This 1s forme from a strip of sheet ead fit within and make joint with thebe flange 25, the margins 26 and 27 of which are 40 6 on the coned faces 9 and 10 respectively of rolled over deformable resilient core elethe two anges. While an effective joint for n ients 28 and 29, such as lengths of rope or 95 low pressure lines is obtained by`t 's type of cord, The width of the stripV 25 is predejoint, and where the line is not su ject to termined with res t to the len h of the conditions which cause the joint to open, it crimped area of t -e margin of t e sealing is not effective for high pressure lines, or ring 11, so that when the rolled-over ed 26 where the joint faces are likel to part, e. g., of the packing strip is located in the c a 100 where the ine is subject to wi e temperature nel 23\0f the sealing ring, the other margin' variations. It is the object of this invention 27 of the packing maybe bent over the to provide a joint which remains tight under edge of the sealing ring and pressed into such conditions. the channel 24 thereof -as illustrated in Figs.

For this purpose, one of the sections-for 1 and 2. It is apparent that if the paclnzng 105 example, the spigot section 7-is provided be arranged in t 1 s manner upon thesealing with a sealing ring 11 having a portion 12 ring before thejoint is made, 1t is self-su embedded in the pipe foi-anchorage, while porting in position and 1s carried by e 4 sealing ring into the pocket 20 as the pipe sections are shoved together to make t e joint.

The diameter of the resilient core elements 28 and 29 for the rolled-over margins of the packing ring is preferably such that the over-all thickness ofthe packing, when arranged on the crimped margin of the sealing ring, is greater than the spacing between the concentric rings 17 and 18 which form the receiving pocket. Consequently', when the pipe sections are shoved together to make the joint, the marginal areas of the packing ring are distorted and compressed against the faces of the rings 1 8 and 19 and form an effective seal therewith. Moreover, the crimps 1G and 17 arethemselves distorted as the sealing ring enters the pocket 20 and thus force the packing against the walls of the pocket 20. This insures a very tight joint, which is effectually sealed even against high pressure leaks.

It will be obvious that the seal is effective regardless of such longitudinal separation of the ipe sections as may be incident to shrinkage or contraction under varying temperature conditions. The depth of the pocket afforded by the rings 18 and 19 is such that longitudinal play of the crimped area ofthe sealing ring therein may occur without affecting the seal.

In Fig. 5 have applied the same thought to pipe sections 30 and 31, each of j which has embedded therein a cylindrical metal shell 32, 33. As indicated, the end of `the shell 32 is slightly flared at 34, and is continued b the conical face 35 of the bell flange 36 o the pipe. Similarly, the lshell 33 of pipe section 31 is conically constr1cted at 37 and forms a facing for the spigot flange 38. Thus, when the pipe sections are shoved together to form a joint, the latter is effected between the metal faces 34 and 37.

The margin of the conical extension 37 of the metal cylinder 33 is extended beyond the end of the spigot flange 38 and 1s crimped at 39 and 40 to form a sealing ring corresponding to that above described and shown in Figs. 1-3. To cooperate therewith, a pocket 41 is formed in the face of the pipe 30 between the cylindrical portion' of the shell 32 and a concentric ring 42 of less diameter, cast into the pipe.

As stated above, a joint o this character may be made in any style of pipe joint, such v for instance as a butt joint. I prefer, however, a bell and spigot of the type illustrated, since not only is the seal more fully protected from external influences, but it is to a certain extent relieved of strain by the tightness of the joint between the bell and spigot flanges. This is particularly the case where the pipe is cast on machined forms which impart to the joint surfaces of the concrete a finish which is substantially as effective as metal facing, if proper care be utilized in the preparation of the composi-v tion of the concrete at the joint faces. It will of course be understood also that the joint faces, and in fact the entire meeting faces, of the pipe ends, including the sealing pocket, are all smeared or heavily coated with some plastic sealing material, such as pitch, asphalt or other appropriate sealing material, which is plastic under the range of temperature variations which the pai'- ticular joint is likel to encounter.

Various modifications in construction and arrangement will readily occur to those dealing with the problem, which do not dcpart from what I claim as my invention.

1. A joint between concrete pipe sections, comprising a sealing ring embedded in one of said sections and having a crimped margin projecting beyond an end face thereof, an annular pocket formed in the opposed end of the other pipe section and adapted to receive the projecting margin of said sealing ring, in combination with packing means comprising tubular gasket elements seated in the annular channels of the projecting margin of the sealing ring, and of such dimensions that upon the entry of the said margin of the ring into the pocket, the gasket is deformed into packing relation with a wall of the pocket.

2. A joint between concrete pipe sections, comprising a sealing ring embedded in one of said sections and projecting beyond an end face thereof, an annular pocket formed in the opposed end of the other pipe section and adapted to receive said sealing ring, in combination with a packing element comprising an annulus adapted to embrace the sealing ring between its opposite side margins, said margins having enlargements adapted for deformation upon the insertion of the sealing ring into the pocket to effect a seal.

3. A joint between concrete pipe sections, comprising a sealing ring embedded in one of said sections and projecting beyond an end face thereof, an annular pocket formed in the opposed end of the other pipe section and adapted to receive the projecting portion of said sealing ring, in combination with a packing element comprising an annulus adapted to embrace the sealing ring between its opposite side margins, said margins having enlargements adapted for deformation uponv the insertion of the sealing ring into the pocket to effect a seal, said enlargements at the opposite side margins of the packing annulus being longitudinally spaced against opposite faces of the sealmg ring.

4. A joint between concrete pipe sections, comprising a sealing ring embedded 'in one of said sections and projecting beyond an len llO

. and adapted to receive the end face thereof, anv annular pocket formed in the opposed end of the other pipe section and adapted to receive the projecting'portion of said sealing ring, in combination with a lead packing gasket carried by the projecting portion of the sealing ring, and of such dimensions that upon the entry of the said portion ofthe ring into the pocket, the gasket is deformed into packing relation with a.wall of the pocket, together with a compressble filler encased in the gasket.

5. A joint between comprising a sealin of said sections and projecting beyond an end -face thereof, an annular pocket .formed in the opposed end of the other'pipe section projecting portion of said sealing rin in combination with a lead packing gas et embracing the entering margin of the sealing ring and of such dimensions that upon the insertion of the ring into the pocket the asket is deformed linto packing relation with the inner and outer walls of the pocket, to ether with a compressible filler encased in t e opposite margins of the gasket. l

6. A joint between'concrete pipe sections, comprising a sealing ring embedded in one of said sections and projecting beyond an end face thereof, an annular pocket formed in the opposed end of the other pipe section and adapted to receive the projecting portion of said sealing ring, in combination with a lead packing gasket carried by the pro-4 jecting portion of the sealing ring, an`d of such dimensions that upon the entry of the said portion of the ring into the pocket, the gasket is deformed into packing relation with a wall vof the pocket, the projecting portion of the ,sealing ring being crimped.

concrete pipe sections,

7. A joint between concrete ppe sections,

comprising a sealing ring embe d in one of said sections an projecting beyond an end face thereof, an annular pocket formed 1n the opposed end of the other pipe section and adapted to receive said sealing ring, 1n combmationswith lead acking arranged on opposite faces of vsaid ring, and of such\.dimension`s that u on the insertion of the rin into the poc et said packing "is deforme by its engagement with the inv ring embedded in one being of suc pocket, theproing ring being Abracing said crimped margin of the sealing ring and"fengag1ng the inner and outer faces of' the annular pocket in they completed joint; v

9. A joint between concrete pipe sections, comprising a sealing ring embedded in one of said sections and projecting beyond an end facethereof, said projecting portionof the sealing ring being crimped, an annular pocket formed in the opposed end of the other pipe section and adapted to receive the projecting crimped portion of said sealing ring, in combination with packing means comprising a tubular deformable gasket element lying in the crimp of said sealing ring and of such dimensions that upon the entry of said sealing ring into the pocket the gasket element is deformed into packing relation with the Wall of the pocket.

.10. A joint between concrete pipe'sections, comprising a sealing ring embedded in one of `said sections and projecting beyond an end face thereof, said projecting portion of the lsealing ring beingcrimped to afford oppositely faced' channels, an annular pocket formed in the opposed end of the other pipe section and adapted to receive the projecting crimped portion of said sealing ring, in combination with packing means comprising tubular deformable gasket elements engaged withopposite faces of said sealing ring and lying in the channels afforded by thereof, said packing means dimensions that upon the entr ofthe sealing ring into the pocket the said tubular gaskets are deformed into acking relation with the walls of the poc et.

n testimony whereof I have signed my name to this s ecication. Q

GEOR E COBRIE BABTRAM. Y

the crimpin 

